'Mario Tennis Open', 'Rhythm Thief and the Emperor's Treasure' dated

Nintendo has announced that the 3DS sports title, which will support online multiplayer, will be available in North America from May 20 and Europe from May 25.

Rhythm Thief and the Emperor's Treasure, a musical puzzle adventure that will be published by Sega, will release on April 5.

Meanwhile, Fire Emblem has been confirmed for Europe sometime in 2012 with the promise of downloadable content for extra maps.

Project Zero titles Spirit Camera: The Cursed Memoir on 3DS and Project Zero 2: Wii Edition will release sometime before the summer, while Wii title Beat the Beat: Rhythm Paradise is to be released this year.